tag:blogger.com,1999:blog-9071048343455395511.post5588561576671790097..comments2024-03-24T22:03:31.205+00:00Comments on Roger G3XBM's (Mainly) Amateur Radio Blog: 481THz (light communication) progressRoger G3XBMhttp://www.blogger.com/profile/13673890140751539870noreply@blogger.comBlogger1125tag:blogger.com,1999:blog-9071048343455395511.post-68978797204368899182012-02-29T10:16:38.346+00:002012-02-29T10:16:38.346+00:00Fascinating. Apart from a school 'open day'...Fascinating. Apart from a school 'open day' demo using a bike lamp and an ORP60 back in the 60's, I haven't done much with this type of thing.<br />I'm just starting out again and have made a simple baseband TX (Luxeon 1-watt led with 100mm lens)and a BPW34 receiver. I'm wondering if there is a relatively easy way to filter out 50/100 Hz buzz from street lamps etc apart from the usual T-notch or Sallen Key HPF? I can't see much info on this on the 'net. Thanks Andy G1HBEAnonymousnoreply@blogger.com